Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.9 on date 01-05-2020 and time 11:47:37 (Italy) in region 5 km SE Troina (EN)

A magnitude ML 1.9 earthquake occured in region: 5 km SE Troina (EN), on

  • 01-05-2020 09:47:37 (UTC)
  • 01-05-2020 11:47:37 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.7450, 14.6210 at 24 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

Search earthquakes: Any within 30 km radius

The values of hypocentral coordinates and magnitude may be revised at a later time as more information becomes available.

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Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Troina EN 5 9373 9373
Gagliano Castelferrato EN 8 3593 12966
Regalbuto EN 10 7277 20243
Cerami EN 12 2006 22249
Agira EN 13 8345 30594
San Teodoro ME 14 1403 31997
Cesarò ME 14 2439 34436
Capizzi ME 17 3176 37612
Centuripe EN 17 5470 43082
Nissoria EN 18 3000 46082
Bronte CT 19 19172 65254
Nicosia EN 20 13899 79153

Municipalities with at least 50000 inhabitants

An earthquake occurred to
49 Km NW of Catania (314555 inhabitants)
50 Km W of Acireale (52622 inhabitants)
57 Km NE of Caltanissetta (63360 inhabitants)
82 Km NE of Gela (75827 inhabitants)
89 Km N of Vittoria (63339 inhabitants)
92 Km N of Ragusa (73313 inhabitants)
96 Km SW of Messina (238439 inhabitants)
97 Km NW of Siracusa (122291 inhabitants)
99 Km W of Reggio di Calabria (183035 inhabitants)
99 Km N of Modica (54633 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000 		ML 1.9 2020-05-01
09:47:37		 37.7447 14.6207 24 2020-11-19
12:36:49		 Bollettino Sismico Italiano INGV 80266851
Reviewed
Rev100 		ML 1.9 2020-05-01
09:47:37		 37.7437 14.6307 20 2020-05-01
10:07:28		 Sala Sismica INGV-Roma 78719761
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-05-01 09:47:37 ± 0.17
Latitude 37.7447 ± 0.0072
Longitude 14.6207 ± 0.0136
Depth (km) 24 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 80266851

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1169
Semi-minor axis of confidence ellipse (meter) 437
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 71
Circular confidence region, given by single value of horizontal uncertainty (meter) 1170.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 61
Number of associated phases, regardless of their use for origin computation 22
Number of defining phases 22
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.38
Epicentral distance of station closest to the epicenter (degree) 0.05486
Epicentral distance of station farthest from the epicenter (degree) 0.68798
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 14
Magnitudes information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.3
Num. used stations 16
Type of magnitude ML
Reference to an origin 80266851
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-08-02 13:23:52

ML:1.9

Field Value
Value 1.9
Uncertainty 0.3
Num. used stations 16
Type of magnitude ML
Reference to an origin 78719761
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-05-01 10:07:28
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SSY.HHZ. 2020-05-01T09:48:01.03 0.3 undecidable manual S 148 76.368 101 0.56 63
IV.AGST.EHZ. 2020-05-01T09:48:00.34 0.6 undecidable manual S 135 76.0683 101 -0.04 48
IV.HAGA.HHZ. 2020-05-01T09:47:58.64 0.6 undecidable manual S 137 69.375 103 0 48
IV.HVZN.HHE. 2020-05-01T09:47:57.93 0.6 undecidable manual S 172 63.3921 104 0.84 39
IV.HLNI.HHZ. 2020-05-01T09:47:53.92 0.3 undecidable manual S 153 49.2174 109 0.47 69
IV.MUCR.HHZ. 2020-05-01T09:47:51.57 0.6 undecidable manual S 34 39.8268 114 0.44 47
IV.SSY.HHZ. 2020-05-01T09:47:50.20 0.1 undecidable manual P 148 76.368 101 -0.47 87
IV.AGST.EHZ. 2020-05-01T09:47:49.89 0.3 undecidable manual P 135 76.0683 101 -0.73 60
IV.HAGA.HHZ. 2020-05-01T09:47:49.01 0.3 undecidable manual P 137 69.375 103 -0.6 64
IV.MSFR.HHZ. 2020-05-01T09:47:49.70 0.6 undecidable manual S 355 32.2455 120 0.39 48
IV.RAFF.HHZ. 2020-05-01T09:47:48.95 0.1 undecidable manual P 202 62.1933 104 0.4 92
IV.HVZN.HHE. 2020-05-01T09:47:48.49 0.1 undecidable manual P 172 63.3921 104 -0.23 94
IV.CSLB.HHZ. 2020-05-01T09:47:47.23 0.3 undecidable manual P 294 53.7018 107 -0.06 74
IV.PETRA.HHZ. 2020-05-01T09:47:46.50 0.3 undecidable manual P 283 45.4212 111 0.43 71
IV.HLNI.HHZ. 2020-05-01T09:47:46.27 0.1 undecidable manual P 153 49.2174 109 -0.35 94
IV.MUCR.HHZ. 2020-05-01T09:47:45.09 0.1 undecidable manual P 34 39.8268 114 -0.19 100
IV.GALF.HHZ. 2020-05-01T09:47:44.47 0.3 undecidable manual S 232 6.0939 164 -0.32 76
IV.MSFR.HHZ. 2020-05-01T09:47:44.02 0.1 undecidable manual P 355 32.2455 120 -0.21 100
IV.CAGR.HHZ. 2020-05-01T09:47:43.11 0.3 undecidable manual P 218 17.2716 140 0.67 69
IV.EPZF.HHZ. 2020-05-01T09:47:43.45 0.3 undecidable manual P 67 22.5552 131 0.44 72
IV.ESML.HHE. 2020-05-01T09:47:43.84 1.0 undecidable manual P 122 26.751 126 0.32 25
IV.GALF.HHZ. 2020-05-01T09:47:41.01 0.3 undecidable manual P 232 6.0939 164 -0.6 70
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.GALF.HHE. ML:2.1 0.000847 1 AML other m 2020-05-01T09:47:45.05
IV.GALF.HHN. ML:2.1 0.0008 1.14 AML other m 2020-05-01T09:47:45.22
IV.CAGR.HHE. ML:1.7 0.0002445 1.1 AML other m 2020-05-01T09:47:50.22
IV.CAGR.HHN. ML:1.7 0.000249 0.42 AML other m 2020-05-01T09:47:51.62
IV.MUCR.HHE. ML:1.5 0.0000828 1.02 AML other m 2020-05-01T09:47:53.59
IV.MUCR.HHN. ML:1.7 0.000133 0.8 AML other m 2020-05-01T09:47:53.63
IV.HLNI.HHE. ML:1.8 0.00015099999999999998 0.14 AML other m 2020-05-01T09:47:54.12
IV.HLNI.HHN. ML:1.7 0.0001078 0.84 AML other m 2020-05-01T09:47:54.97
IV.HAGA.HHE. ML:2.2 0.00024050000000000002 1.18 AML other m 2020-05-01T09:47:59.00
IV.RAFF.HHN. ML:1.8 0.0001074 0.24 AML other m 2020-05-01T09:48:00.80
IV.RAFF.HHE. ML:1.8 0.00010425000000000001 0.56 AML other m 2020-05-01T09:48:00.70
IV.AGST.EHE. ML:2.3 0.000305 0.84 AML other m 2020-05-01T09:48:01.22
IV.AGST.EHN. ML:2.2 0.0002045 0.94 AML other m 2020-05-01T09:48:02.71
IV.SSY.HHN. ML:2.6 0.0005995 1.02 AML other m 2020-05-01T09:48:03.27
IV.SSY.HHE. ML:2.3 0.000282 0.6 AML other m 2020-05-01T09:48:03.41
IV.HAGA.HHN. ML:2.2 0.000236 0.94 AML other m 2020-05-01T09:48:15.47
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download